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                               Ft Gibson Lake, OK
                          MONTHLY LAKE REPORT
                                 MAY 13


    POOL ELEVATIONS  STORAGE     RELEASES       EVAP  INFLOW   RAINFALL
DAY      FT-NGVD     2400HR         DSF        INCHES   ADJ     INCHES
      0800    2400    AC-FT   POWER    TOTAL  8A TO 8A  DSF    7A TO  7A
                                                               DAM   BSN
PRIOR MONTH  555.91   402699
 1   555.74  555.61   396700  11136    22567   0.380   19700   0.00  0.00
 2   555.23  555.55   395500  10829    14101   0.310   13500   0.00  0.00
 3   555.38  555.53   395101  10643    10643   0.010   10600   0.30  0.34
 4   555.57  555.91   402699  10657    10657   0.190   14500   0.08  0.10
 5   555.92  556.21   408889  10650    10650   0.050   13800   0.11  0.12

 6   556.17  556.29   410561   8736    12263   0.060   13200   0.00  0.00
 7   556.15  556.34   411607   7970    13228   0.180   13950   0.00  0.00
 8   556.23  556.51   415159   7984    13301   0.260   15250   0.00  0.00
 9   556.19  556.50   414950   7998    13328   0.280   13250   0.65  0.61
10   556.41  556.64   417876   8032    15687   0.080   17250   0.09  0.68

11   556.38  556.49   414741   8120    17984   0.150   16600   0.00  0.00
12   556.26  556.35   411815   8180    17963   0.270   16650   0.00  0.00
13   556.18  556.06   405754   8178    17859   0.290   15050   0.00  0.00
14   555.58  555.69   398300   9300    16663   0.390   13150   0.00  0.00
15   555.26  555.81   400700  10787    12453   0.420   13700   0.00  0.00

16   555.68  556.11   406799  10658    10658   0.080   13800   1.29  0.58
17   555.98  556.24   409516  10637    10637   0.090   12150   0.01  0.05
18   555.90  556.01   404709  10643    10643   0.240    8350   0.00  0.00
19   555.75  555.87   401900  10629    10629   0.250    9450   0.00  0.08
20   555.59  556.12   407008  10622    10622   0.340   13200   0.00  0.01

21   556.29  556.40   412861  10897    19854   0.050   22800   0.05  0.16
22   556.35  556.76   420384  10998    21826   0.000   25800   1.16  0.63
23   556.90  557.19   429504  10797    20415   0.270   25050   0.00  0.00
24   557.30  557.19   429504  10772    20526   0.030   20700   0.00  0.01
25   556.79  556.65   418086  10864    20357   0.310   14800   0.00  0.00

26   556.40  556.69   418921  10700    15382   0.320   15950   0.00  0.00
27   556.80  556.95   424355   7049     7049   0.280   10050   0.00  0.00
28   557.06  556.95   424355   6943     6943   0.380    7100   0.00  0.00
29   556.92  556.83   421847   7049     7049   0.230    5900   0.00  0.00
30   556.89  557.02   425832   7279    13471   0.210   15550   0.45  0.83
31   557.12  557.83   443328  11381    31830   0.130   40800   0.12  1.05

TOTAL                        297118   457238   6.530  481600   4.31  5.25
AVERAGE   556.40               9584    14750           15535 NORMAL= 5.37

MAXIMUM   557.83      443328   DATE=31    TOP CONSERVATION POOL    554.00
MINIMUM   555.18      388100   DATE=15    TOP FLOOD POOL           582.00

                      INFLOW VOLUME=   955239 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION